Metallics WDW2M 8 x 3/4 in. Wafer Head Phillips Sharp Point Drywall Screws - Steel Zinc - Each

The WDW2M ships as a box of 1,000 screws, and 1,000 is also the order minimum. The packed box weighs 4.77 lbs. A free #2 Phillips power bit is included with it.

The WDW2M is a sharp point self-piercing and tapping screw, so it pierces and taps thin material such as light-gauge metal framing on its own. It is not a drill-point screw, so for heavier steel you want a self-drilling point instead. Core hardness is Rockwell C28-38 and it takes 45 Kg/cm of torque minimum before failure.

No. The WDW2M is not Buy American compliant and is not ARRA compliant; country of origin is listed as multiple. On a federally funded job with domestic sourcing requirements you need a different fastener.

The wafer head on the WDW2M sits low (0.082 to 0.098 in. head height) with a wide 0.426 to 0.446 in. bearing surface, so it clamps sheet material flat without pulling through and without standing proud. That is why it is specified for fastening straps, clips, brackets and box supports rather than for dimpling into drywall paper the way a bugle head does.

A #2 Phillips bit. One power bit ships in the box, so a crew running these does not need to source a driver separately for the first box.

The WDW2M is AISI 1018-1022 steel with a zinc finish. Zinc plating is an indoor and protected-location coating; for sustained exterior exposure or wet locations choose a fastener with a heavier coating or stainless construction.

It is specified for the electrical, plumbing, and heating and air conditioning trades, where a low-profile wide-bearing head is used to fasten straps, hangers and box supports to light framing and sheet metal.

Treat them as a guide. There is no single industry standard for self-piercing screw dimensions, so Metallics publishes the head height and width as ranges (0.082 to 0.098 in. and 0.426 to 0.446 in.) and notes that deviations can occur. If you are fastening through a precision clearance hole, verify a sample.